Andromeda’s “halo” already bumping into Milky Way’s ahead of collision
There’s more to galaxies than meets the eye, and now astronomers have mapped out a huge invisible region of the galaxy next door. Observations by the Hubble Space Telescope have detailed the size and structure of the gas halo of Andromeda – and found t… Continue reading Andromeda’s “halo” already bumping into Milky Way’s ahead of collision